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American Garage Door Supply

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  • How To Measure A Spring
    July 8, 2025

    How To Measure A Spring

    Is your door acting up? A spring that’s even a hair off-spec can grind a commercial door to a halt. In our latest guide, “How to Properly Measure a Spring,” we break down the field-tested steps our techs have used for 35 years: wire-size by the 20-coil method, true inside diameter, relaxed length, wind direction, and finish.

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